628744016 has 10 divisors (see below), whose sum is σ = 1218191562. Its totient is φ = 314372000.

The previous prime is 628743977. The next prime is 628744021. The reversal of 628744016 is 610447826.

It can be written as a sum of positive squares in only one way, i.e., 515108416 + 113635600 = 22696^2 + 10660^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19648235 + ... + 19648266.

Almost surely, 2^628744016 is an apocalyptic number.

It is an amenable number.

628744016 is a deficient number, since it is larger than the sum of its proper divisors (589447546).

628744016 is a wasteful number, since it uses less digits than its factorization.

628744016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39296509 (or 39296503 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 628744016 is about 25074.7685133881. The cubic root of 628744016 is about 856.6918228737.

The spelling of 628744016 in words is "six hundred twenty-eight million, seven hundred forty-four thousand, sixteen".